You must preserve the plate!
I have a little pottery thing I made, I must have been 5 or so when I did. My dad helped me and we got it fired with a blue glaze. 45 years later I still have it. It's on my desk with some pens and pencils in it. These things are important to keep. I'll hand it on to my niece of nephew sometime.
Ah so cool - can you send a photograph of it sometime
I did a post back in 2019. There's the link @christinepoulos
https://peakd.com/family/@galenkp/art-efacts-crafting-history-with-my-dad